Door-locking device.



R. B. NEWCOME.

DOOR LOCKING DEVICE.

APPLICATION FILED APR. z. 19|5.

Patented Nov. A21, 1916.

3 SHEETS-SHEET l.'

MIA \\IM Z/-- 5 l WIIIW \\Z V ill/ R. B. NEWCOME.

DOOR LOCKING DEVICE.

APPLICATION msn APR. 1, 1915.

Patented Nov. 21, 1916.

3 SHtETS-SHEET 2.

R. B. N'EWCOME.

DOOR LOCKING DEVICE.

APPLICATION FILED APRJ. 1915.

l 2195249., Patented Nov. 21, 1916. 9 a 3 SHEETS-SHEET 3. l? Fwa. ,67 Ftyw i nre.

ROBERT B. NEWCOME, 0F AMARILLO, TEXAS.

DOOR-LOCKING DEVICE.

Application filed April 7, 1915.

To all whom t may concern.'

Be it known that I, ROBERT B. Nnwcoim, a citizen of the United States, residing at Amarillo, in the county of Potter and State of Texas, have invented new and useful Improvements in Door-Locking Devices, of which the followingl is a specification.

This invention relates to locks and more particularly to means for rendering the ordinary type of mortise locks substantially burglar-proof.

One of the principal objects of the invention is to provide novel and efficient means for locking the ordinary latching bolt in projecting position so that it cannot be retracted by operation of the knob.

Another object of the invention is the provision of a device of this character having a key or lmob controlled locking bolt which secures the latching bolt in projected position together with means for securing the locking bolt against movement when in operative position.

Another object of the invention is to provide a simple and eflicientlock having a single keeper engaging bolt which may be so secured from the inside that it will prevent anyone getting in from without, and wherein the keeper engaging bolt may be secured against actuation from the outside without the use of a key.

Further objects of the invention will ap pear as the following description is read in connection with the accompanying drawing, which forms a part of this application and in which Figure 1 is an edge elevation with the easing in section and showing a lock employing a knob and a key controlled locking bolt. Fig. 2 is a horizontal rsection taken therethrough on the line 2-2 of Fig. 1. Fig. 3 is a side elevation of the lock removed from the door and having the closing plate removed therefrom. Fig. 4 is a vertical sectional view showing a modified` form of lock. Fig. 5 is a side elevation of the door and with parts broken away to show the manner of operating the securing member for the locking bolt. Fig. 6 is a side elevation of a modifiedl form. Fig. 7 is a similar view of a modification. Fig. 8 is a front elevation of the form shown in Fig. 7 with the front plate removed. Figs. 9 and 10 are detail perspective views of the respective in- Specification of Letters Patent.

Patented Nov. 21, 1916.

Serial No. 19,770.

as is usual. The rear end of the latching bolt is formed in the manner ofa yoke with upwardly extending lugs 13 on opposite ends thereof which are engaged by the lateral wings 14 on the knob cylinder 15, as is usual, the bolt 11 being normally projected by a spring 16. Immediately in the rear of the head of the bolt 11 the shank is considerably reduced to form shoulders 17 which are arranged to be engaged by the locking bolt 18 sliding between the lugs 8 and 10, as shown, and being held in either operative or inoperative position by a leaf spring 20 which is arranged to snap into the notches 21 and 22 formed on one side of the bolt. The opposite side of the holt is provided with a lateral oiiset lug 23 for a purpose which will be hereinafter described.

Projecting laterally from the plate 1 is a pivoting stud 24; upon which is mounted a shifting device 25 having a pivotal connection as Ashown at 26 with the upper end of the bar or bolt 18 and having its other end provided with a yoke-shaped extension 27 which is engaged by a radially extending ear 28 formed on a roll back 29. This roll back may be constructed in any suitable manner and may be operated by a key cylinder actuated by a key 30 from either side of the door as indicated in Fig. 1 or may be operated by a lmob 31 as indicated in Fig. 5.

In order to prevent the release of the locking bar from the latching bolt, I provide an auxiliary locking bar 32 which is slidably mounted between lugs 33 projecting laterally from the plate l1 and which is held in projected or retracted position by the spring 34 engaging in notches 35 and 36, as shown. This bolt is provided with a laterally eX- tending stud 37 which projects through the escutcheon plate 38 and carries a knob 39 upon its outer end. This knob is of course arranged upon the inside of the door and when shifted in the slot to the position shown in Fig. 5 the locking bolt 32 will be positioned over the lug 23, thus holding the bolt 18 against movement.

In the modiication shown in Fig. 4 the auxiliary locking bar 32 may be dispensed with or may be employed in a similar manner to that shown in Fig. 3. In this instance, however, two locking bars 41 and 42 are employed, each operated by an independent shifting device 43 and 44 controlled by the knobs 45 and 46, as desired. As both bolts 41 and 42 are independent of each other when the bolt operated from the inner side of the door is set behind the shoulder 17 of the latehing bolt it is apparent that the latching bolt cannot be retracted and that an auxiliary or locking bar such as is shown at 32 will be superfluous although suoli a locking bar may be employed if so desired. By employing a device of this character it will of course be seen that independent locking and latching bolts are unnecessary. In other words, the use of a locking or night bolt is superfluous, the latching bolt serving both purposes.

In the modified form shown in Fig. 6 the casing of the lock has the usual latching bolt 47 slidably mounted therein and operated by the arms 48 on the knob cylinder as will be readily understood. In this type of devices as well. as in forms previously described, the latching bolt is provided with a shoulder 49 arranged to be engaged by a vertically slidable locking bar 50 mounted to reciprocate between the lugs 51 and 52. This locking bar is provided with a hook 53 to which is connected one end of an expansion spring 54 the opposite end being connected to a stud on the casing. This spring normally draws the locking bar downwardly so that its tendency is to engage behind the shoulder 49 when the latching bolt 47 is fully projected. The locking bolt 50 is held in raised position against the action of the spring by sliding bolt 55 which is adapted to engage beneath a lateral lug 56 formed on the locking bolt. The bolt 55 is moved into engagement with the bolt 50 by means of a spiral spring 57 arranged between the back plate of the casing and the rear Vend of the bolt as shown, the bolt occupying the position shown in Fig. 6 when arranged to hold the locking bolt in elevated position and occupying the position shown in Fig. 7 when the bolt 50 is lowered into engagement with the shoulder 49. Mounted to slide between guiding lugs 5S and arranged to vengage above or on top of the lugs 56 is a secondary or auxiliary locking bolt 59 having spaced laterally extending ears 60 projecting therefrom at its rear end. When this bolt is projected as will be hereinafter described and the locking bolt is in lowered position, the forward end of the bolt 59V 466 which engages in the bifurcated end of the operating lever 67. A second rollback member 62 is at the inner end of a knob stem 63l1 which is mounted in the opposite side of the casing, and the knob 77 of which is on the inner side of the door. Said rollback member 62 has an arm 65 which Vengages between the lugs 60 ofthe auxiliary locking bolt 59 and also has an arm 64 which engages in the bifureated end of the operating lever 67. This lever 67 is pivoted upon a stud projecting from one plate of the easing and has the terminal opposite its bifurcated end provided with 'a bifurcated slot. Said slot has arcuate walls to engage the stud 63 which projects laterally from the locking bolt 50. Hence the members 61, 62 are independently operable,

from opposite sides of the lock to engage the lever 67, and cause the latter to move the securing means 50, to latch bolt releasing position. The member 62 also, when turned by its knob 77, causes its arm to first disengage `the bolt 59 from the shoulder 56 of the latch bolt securing means 50, so as to permit the movement of the latter to releasing position, by the lever 67.

In the type of structure shown in Figs. 7 and 8 the same mechanism is utilized to lock the latching bolt but the latching bolt is operated in a different manner. In this instance, it is retracted by the thumb pieces 69 operated upon the lever 7() which is pivoted at 71 in the casin and has its inner y Fig. 6 the latehing bolt may be retracted and projected without interference as the locking 4bolt is held out of engagement therewith by reason of the bolt 55 being engaged beneath the lug 56. When the latching bolt is fully projected by the spring the locking bolt may be depressed by vsimply releasing the bolt 55 from beneath the lugV 56, knobs 73 and 74 being provided for this purpose. These knobs, as will be readily understood, are connected to a shaft which passes through the bolt 55 and through the escutcheon plate 75.

When the bolt 50 :is held by the spring 54 in locking position, engaged behind the shoulder 49 of the latch bolt 47, said latch bolt cannot be operated by the arms 48 of the knob stem. By turning the knob 77 on the inner side of the' door, the member 62 will, through the arm 65, cause the bolt 59 to engage above the shoulder 56 of the bolt 50 and hence the door cannot be ope-ned from the outside even by a person provided With a proper key. The knob 77 may be operated from the inner side of the door to cause the member 62 to release the bolt 59 from the shoulder of the bolt 50 and also cause the lever 67 to raise said bolt 50 and thereupon, the bolt 55 will be automatically projected by the spring 57, thus securing the bo-lt 50 in release position.

What is claimed is l. In a lock, a casing, a normally projected latching bolt slidably mounted therein, means for securing the latching bolt in projected position, means for clogging the securing means and thereby holding the same in operative position, means for rendering inoperative said holding means and retracting the securing means, and means for holding the securing means in inoperative position, said last-named means automatically acting upon the retraction of the securing means.

2. In a lock, a casing, a normally projected latching bolt slida-bly mounted therein, having a shoulder, means for securing the latching bolt in projected position, means for holding the securing means in operative position, means for rendering inoperative said holding means and retracting the securing means, means for holding the securing means in inoperative position, said lastnamed means automatically acting upon the retraction of the securing means, and means including independently operable members, operable respectively from opposite sides of the door for releasing said last-named means from the securing means.

3. In a door lock, a casing, a normally projected latch bolt, means to secure the bolt in projected position, a lever to actuate the securing means, and a pair of revolubly mounted, independently operable members to engage the lever and cause the latter to move the securing means to latch bolt releasing position, said members being respectively operable from opposite sides of the lock.

4l. In a lock, a casing, a normally projected latching bolt slidably mounted therein and having a shoulder, a spring actuated locking bolt slidably mounted in the casing at right angles to the locking bolt arranged to engage the'shoulder to hold the latching bolt against retraction, means for holding the locking bolt in inoperative position, said means being operable from either side of the door, means for securing the locking bolt in operative locking position and means for releasing the said securing means and retracting the operating bolt.

5. In a door lock, a casing, ay normally projected latch bolt, spring actuated means to secure the bolt in projected position, a lever connected to the securing means, a pair of revolubly mounted independently operated members to actuate the lever and cause the latter to move the securing means to latch bolt releasing position, and means operated by onel of said independently operable members to hold said securing means in such position, said independently operable members being respectively operable from opposite sides of the lock.

In testimony whereof I affix my signature in presence of tWo Witnesses.

ROBERT B. NEWCOME.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

' Washington, D. C. 

